Yep, BTC is still a good buy. It reached $20k, and without a doubt it will even surpass its ATH, looking at its graphical history. Undoubtedly, BTC is still undervalued now, so the price now is a good catch. We are looking at the future, and the future of financial landscape is crypto. Just think of it as an investment that could bear soon or years from now, but at least its future is clear and gain is sure.